I think I will just set my space heater to 75 degrees during winter. I am sure this will make the tub temp over 75 degrees, and like I said above, I am ready to put side heat to supplement little heat if needed. Would this be good setting for me to make that 5 sided thing?
Yes if you really want a Tub set-up. Just make sure you think about and plan what your building otherwise you'll waste time and money and get aggravated then end up getting a Tank anyway lol.